Measuring harmonics and intermodulation
is best done using a signal analyzer or spectrum analyzer so the level of the intermodulation
signal in the presence of the transmitted signals can be seen.
A specific test configuration used to measure the third-order intermodulation
product is shown in Figure 2.
The dynamic range of the spectrum analyzer must be at least 6 dB greater than the minimum allowed power level for the harmonic, the adjacent channel power level, or the intermodulation
In the past, this external amplifier had to have a 100-W or greater rating so it would not introduce intermodulation
products into the test system.
Jeong, "A Design of Predistortion Linearizer Controlling the Individual Order of Intermodulation
." Thesis, Sogang University, Seoul, South Korea, 1995.
Chapter 4 describes the system parameters for a typical receiver and transmitter, including noise, dynamic range, intermodulation
products and adjacent channel power ratio.
RH cable is suitable for intermodulation
and low noise measurement, flexible VNA/PNA test ports, phased array antennas, RFI and EMI test sites and various precision test and measurement applications.
This article derives a formula to mathematically predict the level of intermodulation
products generated in a broadband, multi-carrier power amplifier.
The devices exhibit desirable system performance in ASK and FSK mode, a PAE of nearly 40 percent, adjustable output power of up to +10 dBm for long-distance operation, a high selectivity and a high blocking plus low intermodulation
due to the receiver module's low-IF architecture.